News Release – May 12, 2015

Tempe, Arizona, May 12, 2015 – Comtech EF Data Corp. (CEFD) announced today the promotion of Louis Dubin to Senior Vice President, Product Management. In this role, Dubin will lead the company’s Product Management organization and direct CEFD’s primary technology and marketing thrusts. His responsibilities include development of business cases for new products and solutions and prioritization of product development across CEFD. Dubin will also be responsible for investigating emerging technologies and potential industry collaborations that may enhance the company’s market position.

Dubin previously held the position of Vice President, Product Management for Comtech EF Data, where he was responsible for business development and product management for high-speed modems, TDMA modems, and broadcast products. He joined Comtech EF Data in 2008, through the acquisition of Radyne Corporation. During his tenure at Radyne Corporation, Dubin held the positions of President of Radyne’s Phoenix, Arizona division and Vice President of Sales.

Dubin has over 25 years of experience in the telecommunications and transmission industry. He holds a degree in Electrical Engineering from the Florida Institute of Technology, and completed the Stanford Executive program in Technology Management.

“Mr. Dubin has demonstrated premier technical and market knowledge combined with an unmatched ability to connect with our customers,” commented Robert McCollum, Senior Vice President of Comtech Telecommunications Corp. and President of Comtech EF Data Corp. “This promotion is well-deserved. We consider Lou a key member of our senior management team.”

Comtech EF Data Corp., a subsidiary of Comtech Telecommunications Corp. (NASDAQ: CMTL), is the recognized global leader in satellite bandwidth efficiency and link optimization. The advanced communication solutions encompass the Heights Networking Platform, Advanced VSAT Solutions, Satellite Modems, RAN & WAN Optimization, Network & Bandwidth Management and RF products. The Company is recognized as a technology innovator, and has a reputation for exceptional product quality and reliability. The solutions enable commercial and government users to reduce OPEX/CAPEX and to increase throughput for fixed and mobile/transportable satellite-based applications. For more information, visit comtechefdata.wpengine.com.

Certain information in this press release contains statements that are forward-looking in nature and involve certain significant risks and uncertainties. Actual results could differ materially from such forward-looking information. The Company’s Securities and Exchange Commission filings identify many such risks and uncertainties. Any forward-looking information in this press release is qualified in its entirety by the risks and uncertainties described in such Securities and Exchange Commission filings.

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Notice: Comtech EF Data reserves the right to change specifications of products described in these documents at any time without notice and without obligation to notify any person of such changes. Information in these documents may differ from information published in other Comtech EF Data documents.